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  <main id="main" class="col-md-9"><div class="page-header">
      <img src="../logo.svg" class="logo" alt=""><h1>UTILITY - DRAFT - See names and size of data sets in installed package(s) - internal utility function</h1>
      <small class="dont-index">Source: <a href="https://github.com/USEPA/EJAM/blob/HEAD/R/utils_datapack.R" class="external-link"><code>R/utils_datapack.R</code></a></small>
      <div class="d-none name"><code>datapack.Rd</code></div>
    </div>

    <div class="ref-description section level2">
    <p>Wrapper for data() and can get memory size of objects</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">datapack</span><span class="op">(</span>pkg <span class="op">=</span> <span class="va">ejampackages</span>, len <span class="op">=</span> <span class="fl">30</span>, sortbysize <span class="op">=</span> <span class="cn">TRUE</span>, simple <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></code></pre></div>
    </div>

    <div class="section level2">
    <h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>


<dl><dt id="arg-pkg">pkg<a class="anchor" aria-label="anchor" href="#arg-pkg"></a></dt>
<dd><p>a character vector giving the package(s) to look in for data sets</p></dd>


<dt id="arg-len">len<a class="anchor" aria-label="anchor" href="#arg-len"></a></dt>
<dd><p>Only affects what is printed to console - specifies the
number of characters to limit Title to, making it easier to see in the console.</p></dd>


<dt id="arg-sortbysize">sortbysize<a class="anchor" aria-label="anchor" href="#arg-sortbysize"></a></dt>
<dd><p>if TRUE (and simple=F),
sort by increasing size of object, within each package, not alpha.</p></dd>


<dt id="arg-simple">simple<a class="anchor" aria-label="anchor" href="#arg-simple"></a></dt>
<dd><p>FALSE to get object sizes, etc., or
TRUE to just get names in each package, like
<code>data(package = "EJAM")$results[, c("Package", 'Item')]</code></p></dd>

</dl></div>
    <div class="section level2">
    <h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
    <p>If simple = TRUE, data.frame with colnames Package and Item.</p>
    </div>
    <div class="section level2">
    <h2 id="details">Details<a class="anchor" aria-label="anchor" href="#details"></a></h2>
    <p>do not rely on this much - it was a quick utility.
It may create and leave objects in global envt - not careful about that.</p>
    </div>
    <div class="section level2">
    <h2 id="see-also">See also<a class="anchor" aria-label="anchor" href="#see-also"></a></h2>
    <div class="dont-index"><p><code>dataset_pkgdown_yaml_check()</code>
If simple = FALSE, data.frame with colnames Package, Item, size, Title.Short</p></div>
    </div>

    <div class="section level2">
    <h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span> <span class="co"># see just a vector of the data object names</span></span>
<span> <span class="fu"><a href="https://rdrr.io/r/utils/data.html" class="external-link">data</a></span><span class="op">(</span>package <span class="op">=</span> <span class="st">"EJAM"</span><span class="op">)</span><span class="op">$</span><span class="va">results</span><span class="op">[</span>, <span class="st">'Item'</span><span class="op">]</span></span>
<span> </span>
<span> <span class="co"># not actually sorted within each pkg by default</span></span>
<span> <span class="fu">datapack</span><span class="op">(</span><span class="op">)</span></span>
<span> <span class="co"># not actually sorted by default</span></span>
<span> <span class="fu">datapack</span><span class="op">(</span><span class="st">"EJAM"</span><span class="op">)</span><span class="op">$</span><span class="va">Item</span></span>
<span> <span class="co">##datapack("MASS", simple=T)</span></span>
<span> </span>
<span> <span class="co"># sorted by size if simple=F</span></span>
<span> <span class="co">##datapack("datasets", simple=F)</span></span>
<span> <span class="va">x</span> <span class="op">&lt;-</span> <span class="fu">datapack</span><span class="op">(</span>simple <span class="op">=</span> <span class="cn">F</span><span class="op">)</span></span>
<span> <span class="co"># sorted by size already, to see largest ones among all these pkgs:</span></span>
<span> <span class="fu"><a href="https://rdrr.io/r/utils/head.html" class="external-link">tail</a></span><span class="op">(</span><span class="va">x</span><span class="op">[</span>, <span class="fl">1</span><span class="op">:</span><span class="fl">3</span><span class="op">]</span>, <span class="fl">20</span><span class="op">)</span></span>
<span> </span>
<span> <span class="co"># sorted alphabetically within each pkg</span></span>
<span> <span class="va">x</span><span class="op">[</span><span class="fu"><a href="https://rdrr.io/r/base/order.html" class="external-link">order</a></span><span class="op">(</span><span class="va">x</span><span class="op">$</span><span class="va">Package</span>, <span class="va">x</span><span class="op">$</span><span class="va">Item</span><span class="op">)</span>, <span class="fl">1</span><span class="op">:</span><span class="fl">2</span><span class="op">]</span></span>
<span> <span class="co"># sorted alphabetically across all the pkgs</span></span>
<span> <span class="va">x</span><span class="op">[</span><span class="fu"><a href="https://rdrr.io/r/base/order.html" class="external-link">order</a></span><span class="op">(</span><span class="va">x</span><span class="op">$</span><span class="va">Item</span><span class="op">)</span>, <span class="fl">1</span><span class="op">:</span><span class="fl">2</span><span class="op">]</span></span>
<span></span></code></pre></div>
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